Production on the former will wrap after the show's ninth installment while "Jungle" has already finished filming on its 13-episode order.

A network source has confirmed that despite said decision, both Universal Media Studios-produced series will finish out their runs on Mondays at 10:00/9:00c and Fridays at 10:00/9:00c, respectively.

That puts "Enemy's" swan song at December 15, the same date as the "fall finale" of lead-in "Heroes." A permanent replacement is expected to be announced by the end of the week.

The show posted a third place 1.8 rating among adults 18-49 in its most recent airing, literally half its "Heroes" lead-in (3.6 rating). Jason Smilovic created the series and executive produced alongside David Semel and John Eisendrath.

As for "Jungle," the show's eighth installment airs this week. It's believed "Friday Night Lights" will take over for "Jungle" in January.

"Jungle" drew an invisible 1.2 rating in the key demographic last week, but still managed to build off its lead-in "Crusoe" (1.0 rating). Candace Bushnell, Timothy Busfield and Oliver Goldstick were the executive producers of the series.